Turbidity Meters

Turbidity Meters – Portable  (Turbidimeters)

Turbidity Meters

TN100-IR Portable Turbidimeter (waterproof)

The microprocessor-based waterproof TN100 meter is an easy-to-use turbidimeter that meets the rigour of rugged field applications. It is a “must -have” for anyone monitoring turbidity on the go.

Using an Infrared light source, it delivers laboratory accuracy with a resolution of 0.01 NTU across an extended range of up to 20 NTU (Nephelometric Turbidity Units).


  • IP67 Waterproof and Dustproof – Cleaning and maintenance is simple. It floats!
  • Automatic Push-Button Calibration (4 points) for unprecedented full-range accuracy
  • Sturdy Carrying Kit complete with 4 calibration standards, 3 empty cuvettes, batteries and comprehensive instruction manual
  • Power-saving feature allows over 1200 measurements to be taken with a single set of AAA alkaline batteries
  • Large Easy-to-Read Display for optimum viewing of measurements with user-friendly message codes for easy troubleshooting
  • Meets Performance Criteria as specified by ISO 1727 (DIN EN 27027) method
  • The microprocessor-based waterproof TN100 meter is an easy-to-use turbid-meter that meets the rigor of rugged field applications. It is a “must -have” for anyone monitoring turbidity on the go. Using an Infrared light source, it delivers laboratory accuracy with a resolution of 0.01 NTU across an extended range of up to 20 NTU (Nephelometric Turbidity Units).


Product CodeEC-TN100IR
Principle of OperationNephelometric non-ratio (conformance to
ISO 7027 and DIN EN 27027)
Turbidity Range0 to 1000 NTU
Resolution0.01 NTU (0 to 19.9 NTU)
0.1 NTU (20.0 to 99.9 NTU)
1 NTU (100 to 1000 NTU)
Accuracy± 2% of reading ± 1 LSD for 0 to 500 NTU
± 3% of reading ± 1 LSD for 501 to1000 NTU
Repeatability± 1% of reading or ± 0.01 NTU
No. of Calibration Points4 points (automatic)
Response Time6 seconds for full step change
Calibration Standards0.02 NTU; 20.0 NTU; 100 NTU; 800 NTU
StandardisationEPA-approved polymer-based primary standards
Light Source Life> 1,000,000 tests
Light SourceInfrared-emitting diode (850nm wavelength)
Special FunctionsAuto-Ranging; Self-diagnostic
Power Requirements4 x 1.4V batteries, > 200 hours

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Turbidity Meters2100Q Portable Turbidimeter (waterproof)


Easy Calibration and Verification
The Hach 2100Q Portable Turbidity Meter provides confidence your measurements are right every time. On-screen assisted calibration and verification save you time and ensure accuracy. With an easy-to-follow interface, complicated manuals are not needed to perform routine calibrations. Single-standard RapidCal calibration offers a simplified solution for low level measurements.

Simple Data Transfer
Data transfer with the Hach 2100Q portable turbidity meter is simple, flexible, and doesn’t require additional software when used with the optional USB + Power module. All data can be transferred to the module and easily downloaded to your computer with a USB connection, providing superior data integrity and availability. With two different module options, you can customise connectivity and power to meet your unique needs.

Accurate for Rapidly Settling Samples
The Hach 2100Q Portable Turbidity Meter incorporates an innovative Rapidly Settling Turbidity mode to provide accurate, repeatable measurements for difficult to measure, rapidly settling samples. An exclusive algorithm that calculates turbidity based on a series of automatic readings eliminates redundant measurements and estimating.

Convenient Data Logging
Up to 500 measurements are automatically stored in the instrument for easy access and backup. Stored information includes: date and time, operator ID, reading mode, sample ID, sample number, units, calibration time, calibration status, error messages and the result.

Optical System for Precision in the Field
The two-detector optical system compensates for colour in the sample, light fluctuation, and stray light, enabling analysts to achieve laboratory-grade performance on a wide range of samples, even under difficult site conditions.


Measurement Method: Ratio turbidimetric determination using a primary nephelometric light scatter signal (90) to the transmitted light scatter signal.

  • Regulatory: Meets EPA Method 180.1
  • Light Source: Tungsten filament lamp
  • Range: 0 to 1000 NTU (FNU)
  • Accuracy: +/-2% of reading plus stray light from 0 to 1000 NTU
  • Repeatability: +/-1% of reading, or 0.01 NTU (FNU), whichever is greater
  • Resolution: 0.01 NTU on lowest range
  • Stray Light:< 0.02 NTU (FNU)
  • Signal Averaging: Selectable on/off
  • Detector: Silicon photovoltaic
  • Reading Modes (user selectable): Normal (Push to Read); Signal Averaging; Rapidly Settling Turbidity
  • Data Logger: 500 records
  • Power Requirement: 110-230 VAC, 50/60 Hz (with Power or USB+Power module); 4 AA alkaline batteries; Rechargeable NiMH (for use with USB+Power module)
  • Operating Conditions: Temperature: 0 to 50 C (32 to 122 F); Relative Humidity: 0 to 90% @ 30 C, 0 to 80% @ 40 C, 0 to 70% @ 50 C, non-condensing
  • Storage Conditions: -40 to 60 C (-40 to 140 F), instrument only
  • Interface: Optional USB
  • Instrument Enclosure Rating: IP67 (closed lid, battery compartment excluded)
  • Protection Class: Power Supply: Class II
  • Certification: CE certified
  • Sample Required: 10mL (0.3 oz.)
  • Sample Cells: 60mm x 25mm (2.36″ x 1″) borosilicate glass with screw cap
  • Dimensions: 22.9cm x 10.7cm x 7.7cm (9.0″ x 4.2″ x 3.0″)
  • Weight: 527g (1.16 lb.) without batteries; 618g (1.36 lb.) with four AA alkaline batteries

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